What do safety signs inside a tunnel usually indicate?
Right of way
Explanation
Inside a tunnel, **safety signs** are crucial for guiding drivers in emergency situations. One of the main functions of these signs is to indicate the **location of the nearest SOS station**. This is essential for drivers to quickly request help in case of an accident or breakdown.
- Signs like **S-960** and **S-990** are examples of indications found in tunnels. The **S-960** sign indicates the presence of an **emergency telephone**, while the **S-990** sign marks the location of an **emergency exit**.
- These signs are vital for safety, as they provide information on how to act in case of an emergency, such as contacting rescue services.
Therefore, the correct answer is that the safety signs inside a tunnel inform about the **location of the nearest SOS station**.
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